Does anyone know the answer for this?

asked Mar 23, 2022 214k views

4 votes

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5 votes

Answer:

8 cm

Explanation:

The area of the shaded portion is:

$a = \pi * (( {r1)}^(2) - {(r2}^(2)))$

A=39π cm^2

r1 is the radius of the large circle

r2=5 cm

So,

$39\pi = \pi * (( {r1)}^(2) - {5}^(2) ) \\ r1 = 8 \: cm$

Shardendu answered Mar 30, 2022

5.0k points

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